Computation times

00:00.056 total execution time for 3 files from examples/cache:

Example	Time	Mem (MB)
HDF5 cache (plot_hdf5cache.py)	00:00.041	0.0
Memory full cache (plot_memory_cache.py)	00:00.012	0.0
Simple cache (plot_simple_cache.py)	00:00.003	0.0